Improvement in pumps



W. ADAIR.

PUMPS.

Patented Dec. 26,1876.

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UNITED STATEs PATENT OFFICE.

WILLIAM ADAIR, OF LIVERPOOL, ENGLAND.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 185,619, dated December26, 1876; application filed October 31, 1876.

To all whom it may concern Be it known that I, WILLIAM ADAIR, ofLiverpool in the county of Lancaster, England, engineer, have invented anew and useful Improvement in Pumps, which improvement is fully setforth in the following specification, reference being had to theaccompanying drawings.

This invention relates more especially to pumps for use on board ship;and consists in means for utilizing as force pumps ships pumps in whicha solid piston or plunger is used, and in which a pair of valves aredirectly over each other in a chamber open at top, and in providing anair-vessel filled with suction and delivery valves and withhoseconnections.

When it is desired to use a lift-pump as a fire-engine, or for forcingwater, a pair of suction and delivery valves are removed, and the saidair-vessel and connections attached, preferably by a bayonet-joint, soas to close the ordinary suction-pipe. The water is drawn from over theships side through the airvessel.

Figures 1, 2, 3, 4, 5, and 6 illustrate my invention. Fig. 1 is a viewof a pump, showing the valve-chamber a, part of the piston barrel 1),and my air-vessel and connections in section. Fig. 2 is a view at rightangles to Fig. 1, also partly in section. Figs. 3, 4, 5, and 6 aresections at the line A B (l D.

When a pair of valves has been removed from one of the valve-chambers, Iinsert in their place the air-vessel and connections, as

shown, so that the packing-pieces 0 rest on the upper and lowervalve-seatings d, and make the joints tight. The said air-vessel andconnections are secured in position by a clamp. the one shown, thevalves in the other chamber may be removed. A suction-hose, to be passedoverboard or into any water-containing receptacle, is attached to thenozzle f, and a delivery-hose to the nozzle h.

When the pump is operated, water is drawn through the nozzle f, down thepassage or way 15, through the valve j, into the chamber k, on theupstroke of the piston l, and is expelled on the down-stroke thereof,through the valve m, into the chamber n, which acts as an airvessel, andthence, through the way or passage o, to the delivery-nozzle h. Thearrows show the direction of motion of the fluid.

It will be obvious that various modifications'and arrangements of theabove-described apparatus may be made without departing from myinvention.

Having now particularly described the nature of my said invention, sothat others will be enabled to carry my improvements into effect, Iclaim- The combination of piston-barrel b, piston l, chambers to k n,valves j m, passages 'i o. and hosenozzles f h, substantially as setforth.

WM. ADAIR.

Witnesses:

EDWIN G. GoRMLY, J. JOHNSON.

It the pump is double-acting, as is

